H04R 27 - Public address systems

Patents for H04R 27 - Public address systems (2,454)
12/2011
12/21/2011	CN202085306U 一种音响输出装置、音响设备和音响系统 An acoustic output device, audio equipment and sound systems
12/21/2011	CN102291665A 锁定装置以及具有锁定装置的固定结构 And a locking means having a locking means of the fixed structure
12/20/2011	US8081776 Indoor communication system for a vehicular cabin
12/15/2011	WO2011155991A1 High definition distributed sound system
12/14/2011	EP2394444A1 Conference microphone system
12/13/2011	US8078298 System for node structure discovery in an audio-related system
12/13/2011	US8077877 Courtesy announcement system and method of using
12/08/2011	WO2011089403A3 Method and system to reduce feedback between handsets in a communication system
12/07/2011	CN202068571U 一种接收蓝牙音频信号的蓝牙音响 A receiver Bluetooth stereo Bluetooth audio signals
12/01/2011	WO2011027005A3 Method and system for speech enhancement in a room
12/01/2011	DE102010021879A1 Lautsprechervorrichtung mit umlaufender, trichterförmiger Schallaustrittsöffnung Speaker device with circular, funnel-shaped sound outlet
11/2011
11/30/2011	CN202059576U 一种多分区智能音响服务系统 A multi-partition intelligent sound service system
11/30/2011	CN202059575U 高清读卡音响系统 Reader HD sound system
11/30/2011	CN101309088B 随机寻址自适应跳频无线话筒及其接收机 Random addressing adaptive frequency hopping wireless microphone and receiver
11/24/2011	WO2011117557A3 Method and device for loudspeaker control
11/23/2011	CN202050539U Loudspeaker system with wide angle sound wave radiation area
11/16/2011	CN102246542A Sharing public addressing system using personal communication devices in an ad-hoc network
11/16/2011	CN101483731B Portable digital television
11/03/2011	WO2011134041A1 Method, apparatus, and system for mass audio notification
11/02/2011	CN202026462U Sound amplifier
11/02/2011	CN202026461U Electronic device and sound amplifying device thereof
11/02/2011	CN202026460U External power supply for hearing aid
10/2011
10/27/2011	DE102010028022A1 Verfahren und Einrichtung zur Überwachung einer Lautsprecherlinie Method and apparatus for monitoring a loudspeaker line
10/25/2011	US8045730 Methods and systems for reducing acoustic echoes in communication systems
10/20/2011	WO2011127618A1 Method and device for identifying objects and triggering interactions by means of close-range coupling of acoustically modulated data signals
10/19/2011	EP2378790A1 Loudspeaker system and sound emission/collection method
10/19/2011	CN202014364U Intermediate frequency implanted phase plug used for sound amplification
10/19/2011	CN1972530B Electrostatic transducer, ultrasonic speaker, driving circuit of capacitive load
10/06/2011	US20110243354 Wired, wireless, infrared, and powerline audio entertainment systems
10/05/2011	EP2371146A2 Sharing public addressing system using personal communication devices in an ad-hoc network
10/05/2011	CN202004964U Loudspeaker for ship
10/05/2011	CN1968546B Electrostatic transducer, driving circuit of capacitive load, method for setting circuit constant
10/05/2011	CN101422052B Public address system
09/2011
09/29/2011	WO2011117557A2 Method and device for loudspeaker control
09/21/2011	CN201986149U 带有功放和解码功能的同轴音响系统 Coaxial audio system with amplifier and decoding functions
09/21/2011	CN201986148U 可挠性扩音结构 PA flexible structure
09/21/2011	CN1864434B Wireless microphone communication system
09/14/2011	CN201976250U 方便组装的手提式扩音机 Easy assembly of portable megaphone
09/08/2011	US20110216915 Providing audible information to a speaker system via a mobile communication device
09/08/2011	US20110216914 Wired, wireless, infrared, and powerline audio entertainment systems
09/07/2011	CN201967130U 多输入扬声器 Multi-Input Speaker
09/07/2011	CN201967129U 具隐藏式手把的手提扩音机 A hidden hand in hand with megaphone
09/06/2011	US8014544 Computer installed stereo PA amplifier card
08/2011
08/31/2011	CN201957240U 一种射频无源音响 A radio frequency passive stereo
08/31/2011	CN201957239U 用于扬声器的扩音装置 Public address system for speaker
08/31/2011	CN201957238U 用于扬声器的扩音装置 Public address system for speaker
08/31/2011	CN102170607A Wireless voice amplification system and volume control method of wireless microphone and wireless voice amplification system
08/24/2011	EP2360844A1 Wireless Device Communication with Multiple Peripherals
08/17/2011	CN201937790U 扬声器箱及扬声器系统 Speaker box and speaker system
08/17/2011	CN201936589U 一种带扩音器的吉他 A guitar with loudspeakers
08/17/2011	CN102160398A Electronic device directional audio-video capture
08/17/2011	CN102158792A Frequency modulation radio microphone
08/17/2011	CN102158791A Speaker system with eight acoustic radiators
08/17/2011	CN101223819B Device and method for controlling a plurality of loudspeakers by means of a DSP
08/17/2011	CN101223817B Apparatus and method for controlling a plurality of speakers by means of a graphical user interface
08/10/2011	CN201928436U 便携式无线功放 Portable Wireless Amplifier
08/10/2011	CN201928435U 双声道小功率集成功放 Dual-channel low-power integrated amplifier
08/09/2011	US7995770 Apparatus and method for aligning and controlling reception of sound transmissions at locations distant from the sound source
08/03/2011	EP1748674B1 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
08/03/2011	CN201919152U 自动通断电节能扩音器 Auto power off saving through megaphone
08/03/2011	CN201919151U 具有灯光投射功能的多媒体音箱 With a light projection capabilities of multimedia speakers
07/2011
07/28/2011	WO2011090386A1 Location dependent feedback cancellation
07/27/2011	CN201910915U Integrated interactive floor sounding compatible with various tone sources
07/20/2011	CN1892882B Multi-disc type digital-code automobile sound equipment
07/13/2011	CN201898619U Device for directly driving charged thin film loudspeaker
07/13/2011	CN201898618U Novel sound box
07/13/2011	CN201898617U Sound antenna combined by reflection-type multi-paraboloid horn loudspeakers
07/13/2011	CN201898616U Assembled acoustic device
07/06/2011	CN201890482U Storage device, charger and loudspeaker of music nipple
07/06/2011	CN1976544B Capacitive load driving circuit, electrostatic transducer, ultrasonic speaker
06/2011
06/29/2011	CN201886772U Sound playing system and moving picture experts group audio layer-3 (MP3) decoding controller
06/22/2011	CN201878329U Portable sound box with play regions adjustable
06/22/2011	CN201878328U Solar energy portable multimedia sound box
06/21/2011	US7965850 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
06/16/2011	WO2011045813A3 A method and product to transparently deliver audio through fusion of fixed loudspeakers and headphones
06/16/2011	US20110142267 Wired, wireless, infrared, and powerline audio entertainment systems
06/15/2011	CN201869362U Portable multi-purpose loudspeaker bag
06/15/2011	CN201869361U Novel family background music system
06/15/2011	CN1989783B Speaker system, and speaker cluster system
06/15/2011	CN102100087A System, converter and method for wide area distribution of supervised emergency audio
06/09/2011	WO2011066682A1 An apparatus
06/08/2011	CN201860451U Movable sound combination
06/01/2011	DE202011003809U1 Arraybarer Multifunktionslautsprecher Arraybarer Multifunctional Speaker
06/01/2011	CN201854431U Portable microphone
06/01/2011	CN201854430U Intelligent sound service system for multi-partition power line transmission
06/01/2011	CN201854429U Supermini audio equipment
06/01/2011	CN201853057U Projection screen with voice amplification function
06/01/2011	CN201853056U Movable projection screen with voice amplification function
06/01/2011	CN102082989A ZigBee protocol-based all-digital wireless sound reinforcement device for teaching
05/2011
05/31/2011	US7953232 Guiding device and method of controlling the same
05/31/2011	US7953228 Automatic audio systems for fire detection and diagnosis, and crew and person locating during fires
05/26/2011	WO2011060813A1 Hearing assistance system and method
05/25/2011	CN201846476U Portable combined sound box
05/25/2011	CN201846475U Separable solar speaker
05/18/2011	CN201839438U Multi-media sound box
05/18/2011	CN201839437U Waist-hung frequency modulation radio megaphone
05/18/2011	CN201839436U Waist-hanging FM (frequency modulation) and internal-memory digital display loudspeaker
05/18/2011	CN102065364A Portable wireless power amplifier
05/11/2011	EP2320341A2 System and method for designing sound systems
05/11/2011	EP2319251A1 Electronic device directional audio-video capture

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